Research paper topics, free example research papers

Doppler Effect - 679 words
Doppler Effect Christian Johann Doppler, born
November 29, 1803 in Salzburg, Austria died March
17, 1853 in Venice. Christian Doppler an Austrian
Physicist who first described how the detected
frequency of light and sound waves is affected by
the relative motion of the source and the
detector. This aspect became known as the Doppler
Effect. Christian was educated at the
Polytechnical Institute in Vienna. Doppler became
director of the physical Institute and professor
of experimental physics of the University of
Vienna in 1850. In 1842 he published Uber das
farbige Licht der Dopperlsterne which means
Concerning the Coloured Light of Double Stars,
which contained his first statement of the Dop ...
Related: doppler, doppler effect, frequency modulation, moving closer, intensity

Observing Stars - 1,341 words
Observing Stars Observing Stars Our view of the
sky at night is possible because of the emission
and reflection of light. 'Light' is the
better-known term for the electromagnetic
spectrum, which includes waves in the visible,
ultra-violet, infra-red, microwave, radio, X-ray
and gamma-ray regions. The scale of the spectrum
is so large that no region is distinct, several
overlap each other. Each of these regions in the
electromagnetic spectrum represent transverse
waves, travelling as electrical and magnetic
fields which interact perpendicularly to each
other, with different ranges of wavelength. The
magnetic field oscillates vertically and the
electric field horizontally, and each field induc ...
Related: observing, stars, chemical analysis, hubble space telescope, displacement

Observing Stars - 1,406 words
... ion of radiation is. Luminosity (L) is the
total power emitted by a body. The
Stefan-Boltzmann law states that the total energy
radiated per unit time by a black body is
proportional to the fourth power of its absolute
temperature; it also depends on the surface area
(A): L = s A T4 Stefans constant (s) = 5.67 x 10-8
W m-2 K-4 The amount of power received per unit
area is flux (equal to power / area). Light
emitted from an object spreads out in all
directions, the further away it gets the less
intense it becomes according to the inverse square
law: L = d-2 E.g., As Saturn is ten times the
distance from the Sun as Earth, the intensity of
radiation is receives is 1/100 th of that for
Earth ...
Related: observing, stars, energy level, doppler effect, visible

Quasars - 1,856 words
Quasars Since their discovery, the nature of
quasars has been one of the most intriguing and
baffling problems as evidenced by the following
quotations: the problem of understanding
quasi-stellar objects is one of the most important
and fascinating tasks in all physics - G.Burbidge
and Hoyle. The quasar continues to rank both as
one of the most baffling objects in the universe
and one most capable of inspiring heated argument
- Morrison. The redshift problem is one of the
most critical problems in astronomy today - G.
Burbidge. Quasars still remain the profoundest
mystery in the heavens - Hazard and Mitton. The
conventional interpretation of the spectral lines
observed in quasars is based on ...
Related: quasars, milky way galaxy, early stages, hubble telescope, camera

The Beginning Of Time - 1,308 words
The Beginning Of Time The Beginning Of Time There
was a period in history when the beginning of the
world in which we live in was a expressed through
legends and myths, now, through the use of
increasingly advanced scientific equipment we can
see that the universe is more vast and complex
than ever imaginable. The purpose of this paper is
to show some of the modern beliefs regarding the
beginning of the universe by finding the answer of
these questions. What are the commonly excepted
theories of the evolution of the universe? What is
meant by the Big Bang Theory and how does it work?
How our planet and solar system developed from The
Big Bang? This paper will use scientific data to
base the ...
Related: nuclear fusion, protons and neutrons, short history, loop, silk

The Night Sky - 3,925 words
... The Night Sky Long ago, people looked into the
night sky and wondered what they were looking at?
How far away are those twinkles in the sky? Could
they all be stars, or maybe, could they be
something else? What makes certain lights brighter
than others, and how does distance affect their
intensity? These questions and other interesting
facts will be reviewed in the following pages. One
of the most common curiosities regarding the night
sky is distance, which can be very hard to
determine. Because space is so vast, scientists
must use mathematical methods to determine how far
away, how large, and how bright something actually
measures. However, because of the constantly
changing position ...
Related: white dwarfs, morning star, bang theory, venus, galaxy

The Search For Other Worlds: Extrasolar Planets - 1,258 words
The Search For Other Worlds: Extrasolar Planets
Earths Beyond Earth: The Search for Other Worlds
In early 1990, the first extrasolar planet was
detected, surprising everyone by its strangeness.
More planets have now been discovered outside our
solar system than in it. These planets present
many great mysteries to the astronomical world.
Extrasolar planets are planets that exist outside
our solar system; they are orbiting a star other
than our Sun. So far, eighteen have been found,
all of them defying well-established theories
about planets and how they operate (Winters, 46).
As Stephen Maran said, The new discoveries remind
us that ignorance is not just bliss, it is also a
lack of imaginatio ...
Related: planets, hubble space telescope, works cited, carnegie institute, telescope

The Universe - 1,282 words
The Universe It is always a mystery about how the
universe began, whether if and when it will end.
Astronomers construct hypotheses called
cosmological models that try to find the answer.
There are two types of models: Big Bang and Steady
State. However, through many observational
evidences, the Big Bang theory can best explain
the creation of the universe. The Big Bang model
postulates that about 15 to 20 billion years ago,
the universe violently exploded into being, in an
event called the Big Bang. Before the Big Bang,
all of the matter and radiation of our present
universe were packed together in the primeval
fireball--an extremely hot dense state from which
the universe rapidly expanded. ...
Related: expanding universe, universe, york john wiley sons, john wiley, kelvin

Universe And Solar System - 271 words
Universe And Solar System The two most common
beliefs of the formation of the Universe and Solar
System are The Expanding Universe Theory and The
Big Bang. There are some comparisons between the
two and some contrasts. Almost all astronomers
believe that the universe is expanding although
they may have different theories on how this is
happening. The Expanding Universe Theory is based
on the Doppler Effect, the redshift of different
galaxies and the assumption of the Hubble Law. The
Doppler effect occurs when a wave-emmitting object
moves toward or away from an observer and the
sound has a change in pitch as the object
continues to move. For example the sound a police
car siren when it comes ...
Related: expanding universe, solar, solar system, universe, doppler effect